When it's all said and done by early afternoon, most areas can expect to see between 2 inches and 5 inches of snow. The snowfall record for this date was the 7 inches that fell on March 23, 1897 at O'Hare International Airport, where the city's weather is officially recorded.

To deal with it in Chicago, the city's Department of Streets and Sanitation deployed more than 280 pieces of plows and salt spreaders. Real-time monitoring of the city's plows is available online at ChicagoShovels.org.

As of 1:30 p.m., O'Hare had more than 450 flight cancellations and delays averaging 90 minutes. Midway International Airport had more than 50 cancellations and delays averaging one hour. All of the cancellations and delays were due to the snow, the Chicago Department of Aviation said.

Dry conditions move in during the overnight hours into Tuesday, but that'll all be followed by another system with rain -- perhaps thunderstorms -- for early Wednesday morning. That rain will be followed by warmer air, pushing the temperature in some areas to nearly 60 degrees.